diff --git a/src/common/cluster-store_test.ts b/src/common/cluster-store_test.ts
index cee18078bc..5b8707de4a 100644
--- a/src/common/cluster-store_test.ts
+++ b/src/common/cluster-store_test.ts
@@ -33,7 +33,7 @@ describe("empty config", () => {
       id: "foo",
       preferences: {
         terminalCWD: "/tmp",
-        icon: "data:image/jpeg;base64, iVBORw0KGgoAAAANSUhEUgAAA1wAAAKoCAYAAABjkf5",
+        icon: "data:image/jpeg;base64,iVBORw0KGgoAAAANSUhEUgAAA1wAAAKoCAYAAABjkf5",
         clusterName: "minikube"
       },
       kubeConfigPath: ClusterStore.embedCustomKubeConfig("foo", "fancy foo config"),
@@ -364,6 +364,6 @@ describe("pre 3.6.0-beta.1 config with an existing cluster", () => {
 
   it("migrates to modern format with icon not in file", async () => {
     const { icon } = clusterStore.clustersList[0].preferences;
-    expect(icon.startsWith("data:image/jpeg;base64, ")).toBe(true);
+    expect(icon.startsWith("data:image/jpeg;base64,")).toBe(true);
   })
-})
\ No newline at end of file
+})
diff --git a/src/renderer/components/+cluster-settings/components/cluster-icon-setting.tsx b/src/renderer/components/+cluster-settings/components/cluster-icon-setting.tsx
index 04b7ef1fc6..fb35778f6c 100644
--- a/src/renderer/components/+cluster-settings/components/cluster-icon-setting.tsx
+++ b/src/renderer/components/+cluster-settings/components/cluster-icon-setting.tsx
@@ -28,7 +28,7 @@ export class ClusterIconSetting extends React.Component<Props> {
     try {
       if (file) {
         const buf = Buffer.from(await file.arrayBuffer());
-        cluster.preferences.icon = `data:${file.type};base64, ${buf.toString('base64')}`;
+        cluster.preferences.icon = `data:${file.type};base64,${buf.toString('base64')}`;
       } else {
         // this has to be done as a seperate branch (and not always) because `cluster`
         // is observable and triggers an update loop.
@@ -73,4 +73,4 @@ export class ClusterIconSetting extends React.Component<Props> {
       </>
     );
   }
-}
\ No newline at end of file
+}